Il Nuovo Cimento B (1965-1970)

, Volume 45, Issue 2, pp 132–137 | Cite as

Comparison of spectral characteristics of long-term and short-term changes in cosmic-ray intensity

  • R. P. Kane
Article

Summary

Spectral characteristics of the long-term change of Cosmic Ray Intensity in the period 1963–65 are compared with that of the Forbush decrease which occurred in September 1963. For a spectrum of typeE−m, the long-term change has an exponentm of about 1.1 for 1963 increasing to about 1.5 by 1964 end. In contrast, the Sept. 1963 Forbush decrease hasm about 0.7 indicating a much flatter energy-dependence.

Keywords

Solar Cycle Solar Minimum Neutron Monitor Monthly Means Forbush Decrease 
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Riassunto

Si confrontano le caratteristiche spettrali della variazione a lungo termine dell’intensità della radiazione cosmica nel periodo 1963–65 con quelle dell’attenuazione di Forbush verificatasi nel Settembre 1963. Per uno spettro di tipoE−m la variazione a lungo termine ha per il 1963 un’esponentem di circa 1.1 che raggiunge circa 1.5 alla fine del 1964. In contrasto, l’attenuazione di Forbush del Settembre 1963 ha unm di circa 0.7 il che indica una dipendenza dall’energia molto più piatta.

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Copyright information

© Società Italiana di Fisica 1966

Authors and Affiliations

  • R. P. Kane
    • 1
  1. 1.Physical Research LaboratoryAhmedabad

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